xii CONTENTS 



PAGE 



homing horse — Sense of direction in man — A gaucho's 

 testimony — Sudden recovery of the sense of direction 

 — Comments ........ 135 



X 



Migration unrelated to a sense of direction — Personal 

 observations — The old simple account of the pheno- 

 menon — Migration a, mystery still — Newton and 

 Addison: the supernatural theory — Dr. Henry More 

 — Erasmus Darwin and his tradition theory — Wallace 

 and others — Canon Tristram's theory of the origin of 

 life in the Arctic regions — Glacial epochs and Seebolmi 

 in search of evidence — Benjamin Kidd and the simple 

 sun theory — Aspects of migration in England — We are 

 still left wondering — Recent futile methods of attacking 

 the problem — A new method suggested . . . 157 



XI 



Aspects of migration in southern South America — Migrants 

 from the northern hemisphere — The abundance of 

 bird life — Golden plover — Eskimo curlew — Buff- 

 breasted sandpiper — Glossy ibis — Cow-bird — Military 

 starling — Upland plover — The beautiful has vanished 

 and returns not ....... 171 



XII 



The migrants' cry — Unrest previous to departure — Upland 

 plover, swallows and others — Demonstrative and un- 

 demonstrative species — Parental sohcitude — Swifts and 

 house-martins — Strange case of a captive cuckoo — 

 Night migration of diurnal species — Woodland migrants 

 on the pampas — Reluctant migrants — Thistledown as 



